X509_PURPOSE_ANY is ok since 1.0.1+

Let's get it enabled for any case.

Suggested-by: Jakub Zelenka
  php#6312 (comment)

Author: vjardin

ext/openssl/openssl.stub.php

@@ -44,13 +44,11 @@
  * @cvalue X509_PURPOSE_CRL_SIGN
  */
 const X509_PURPOSE_CRL_SIGN = UNKNOWN;
-#ifdef X509_PURPOSE_ANY
 /**
  * @var int
  * @cvalue X509_PURPOSE_ANY
  */
 const X509_PURPOSE_ANY = UNKNOWN;
-#endif
 
 /* digest algorithm constants */